Explosion-engine oiler.



P. P. VALBOE.

EXPLOSION ENGINE OILER.

APPLICATION FILED 1m29. 191'4.

1,144,572. Patented June 29, 1915.

WITN ESSES W MMM STATES PATENT @FFME :ETER P. VALBOE, OF DETROIT, MICHIGAN, AssIGNOR To PRNBERTIIY INJECTOR Co.,v or DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

EXPLOSION-ENGINE OILER.

` Specification of Letters Patent.

Patented June 29, 1915.

Application led January 29, 1914. Serial No. 815,252.

To all LU/wm t may concern: Y

Be it known that I, PETER P. VALBOE, a citizen of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have invented a new and useful Explosion-Engine Oiler, of which the following is a specification.

This invention has reference to improvements in Oilers particularly for explosion engines, but which may be used wherever there is a liability of regurgitation of the lubricant.

It is customary to provide Oilers with sight feeds and it has been proposed to introduce a valve between the engine and the sight feed in order that on the compression stroke, and also on the power stroke of the engine, the gases shall be prevented from iinding their way into the sight feed chamber, carrying some of the lubricant already fed from the sight feed chamber back thereinto, while the explosion destroys the formed drops, thus obscuring the sight openings both by the lubricant and by particles of carbon which might be forced into the sight chamber with the gases of the charge or the gases of combustion. For one reason or another such valve arrangements have proven inefficient and obscuring of the glass walls of the sight feed chamber frequently Occurs.

With the present invention a valve'is provided between the sight feed chamber and the explosion chamber of the engine, but the arrangement is such thatthe valvepositively and firmly closes before any sensible amount of the gases can find their way by the valve and into the sight feed chamber, while on the suction stroke of the engine the valve at once moves to the full Open position permitting the movement of the lubricant through the valve and to the moving parts of the engine both by gravity and by suction. Experience has shown that the glass walls of the sight feed chamber remain clear and unobscured for indefinitely long periods of time without any interference with the passage of the lubricant in su'fiicient quantities to the moving parts of the engine. This is due to the structure and arrangement of the valve mechanism, whereby the valve is seated in the closed position more rapidly than even the gases of explosion can find their way about the valve to the sight chamber.

The invention will be best understood from a consideration of the .followingdetailed description, taken in connection with the accompanying drawings forming part ofvthis ,specicatiom with the further understanding that while the drawings show a practical form of the invention, the latter is not confined to any strict conformity with the showing of the drawings, but may be changed and modified so long as such changes and modifications mark no material departure from the salient features of the invention.

In the drawings :nFigure l is a longitudinal diametric section of the sight feed end of an oiler structure, the drawing being on an enlarged scale. Fig. 2 is a plan view of an adjustable limiting member for the valve, the view being taken from that end through which the lubricant enters to pass to the engine. Fig, 3 is a plan view of the valve as seen from the end toward the sight chamber of the oiler. Fig. 4 is a fragmentary sectional view of the valve portion of the structure shown in Fig. l, showing the valve in the position assumed when subjected to back pressure from the engine.

Referring to the drawings there is shown the nozzle end of an oiler l, the showing including a nozzle 2 through which the oil, which name applies to any suitable lubricant, finds its way after passing the usual controlling valve not shown in the drawings. The nozzle 2 discharges into a chamber 3 inclosed by a tube 4 of glass lodged in a neck 5 which may be integral with the body of the oiler 1 and aXial to the nozzle 2, and this neck is provided with diametrically Opposite sight openings 6 through which the glass tube 4 is visible, these sight openings being arranged to give a view of a drop of Oil issuing from the nozzle 2. The end of the neck 5 remote from the body l of the oiler is screw threaded for the reception of a cap 7, which latter terminates at the end remote from the neck 5 in a neck 8 of less diameter than the neck 5, and this neck 8 is externally threaded for insertion in the wall of the engine cylinder or wherever the oiler is in stalled. The glass tube 4 at the end adjacent to the nozzle 2 is lodged against a frasket 9 and at the end adjacent to the cap l is lodged against another gasket l0 held in place by the ca 7, and between this gasket l0 and the cap gthere is lodged a disk l1 of line wire gauze or other suitable screen material. It is customary to make the gaskets 9 and 10 of cork, but any other suitable material may be employed. The interior of the neck 8 is formed with an axial chamber 12 opening at that end of the neck designed to enter the engine cylinder or other structure, and this chamber at the inner end terminates in an annular seat 13 from which there is extended an axial passage 14 of lessdiameter than the chamber 12, and opening into an expanding portion 15 of the interior of the cap 7 covered by the screen 11. The open end of the chamber 7 has its walls interiorly screw threaded, as shown at 16, for

the reception of a hollow nut 17 freely open` at one end and there provided with diametrically opposite recesses 18 for the application of a manipulating tool, while atthe other end the hollow nut is closed except for an axial passage 19 extending through an axial stud or bossv 20 .on the side of the corresponding end of the nut remote from the end provided .with the .recesses 18. The boss 20 has side openings 21 communicating with the passage 19.

Lodged in the chamber 12 is a valve 22 having a hollow stem 23 adapted to the passage 14 and terminating within vthe chamber 12 in a radially expanded head 24 of a size to extend beyond the seat 13. The hollow stem 22 has a passage 25 lengthwise therethrough from the end remote from the head 24 to said head, but not through it, while through the side wall of the stem 23 is an opening 26 communicating with the interior or bore 22 of the stem 23. The valve 22 is free to slide lengthwise in the vbore 14 between vthe seat 13 and the adjacent end of the boss 20 and the distance between the boss 20 and the seat 13 determines the play of the valve, and as it is customary to install the oiler in an upright position the valve will normally gravitate to the boss 20 upon which it ordinarily rests, and in which position the passage 26 is freely open to the chamber 12, while the passage 25 is always open to the interior of the sight chamber 3, but separated therefrom by the screen 11.

When the oiler is installed on an explosion engine, say, on the cylinder of the engine, so as to deliver lubricating oil to the piston of the engine, it may be subjected to the suction of the engine and to the action of the pressure of the `charge during the compression stroke of the engine and the pressure of the burnt gases of combustion during the power stroke of the engine. Vhen there is neither suction nor compression the valve 22 falls to and rests upon the boss or projection 2O of the hollow nut or plug "17, which latter is employed as an adjustable stop member for the valve in its movement away from the valve seat 13. Suppose, now, that the piston is moving on the suction stroke. The valve then remains in contact with the limiting stop or boss 20. rlhe Vlubricating oil iows through the nozzle 2 into the chamberg3, so thatitwill drop" upon the screen .11 `and from thence into the space 15 below the screen, and inally into the passage 14 and through the valve by way of the passage 26 into the chamber 12, ultimately finding its way through 'the chamber.'12,-nbut in so flowing they strike yond the valve seat 13, and since the head may be in the form of a disk of substantially equal. thickness with parallel plane faces, ther-stream of compressed gas striking the broad face ofthe valvefhead presented toward the passage A19 quickly forces the valve toward the seat 13 until the latter is engaged by the valve, the passage 26 in the meantime moving Iup into the passage 14 andcommunication between the chamber 12 and the passage 26 is at once cutoff even before any of the diverted stream of gases reaches it, the disk-like tf'alve headfserving as a baiiie plate. 'The valve may be actually very light in weight and .the stream of gases may readily expand into the chamber 12, so that their flow is reduced to an extent preventing them from reaching the vbore 25 of the valve stem to any noticeable extent. 'l'heincreasing pressure within the .chamber 12 'caused by the advancing compression stroke holds the valve firmly to its seat, wherefore the gases vare held back from access to the sight chamber, 4wherefore there is then no flow of lubricant into the sight chamber. from the nozzle 2 and no :flow of gasinto the sight chamber, nor 1s there regurgitation of oil into the sight chamber.

zle 2 throughthe then obscured sight open#` ings. This diliculty is avoided 'by ,the pres-` ent invention as has been found by vactual use, and it would seem that `the valve moves so quickly underV the stream of gas under pressure that it closes before any sensible amount of gas isl projected into `the :sight chamber., for long continued use hasfailed lio ies

to show any obscuring deposit 'upon the stances which will produce obscuring of the glass .opposite the sight openings with valved structures as heretofore produced.

The hollow nut 17 provides a ready means for adjusting the throw of the valve to suit different conditions and toaid `in obtaining the best results under different workingconditions. The boss 20 does not interfere in .i any way with the free flow of oil afterhaving passed the valve, since the passages 21 permit the oil to readily lind its way to the passage 19and from thence to the interior of the hollow nut and so to the engine piston.

As in all oilers of this kind the valve and valve passages are relatively small, and hence may become easily choked by minute particles often found in lubricating oil, wherefore the screen or strainer 11 is provided, this also aiding in arrestingthe access of any small particles which might pos sibly pass they valve to the sight chamber.- rIhe screen 1l offers no material impediment tothe flow of lubricating oil, and while its Ipresence is advantageous in holding back any particles which might choke or obscure i passages or sight openings, ityis not at all obstructive as to the free How of the lubricant from the nozzle 2 to and through the valve.

What is claimed is l. An oiler for explosion engines provided with a sight feed chamber, and i another chamber between the sight feed chamber and the discharge end of the'oiler, a valve within the second-named chamber mounted to have unimpeded movement to the open and closed positions and provided with a laterally expanded baille face toward the outlet end of the oiler, and `means for directing a constricted stream of gases of explosion against the central portion of the baffle face, whereby the gases of explosion seat the valve before such gases can reach the sight feed chamber. i

2. An oiler for explosion engines provided with a. sight feed chamber and another chamber between the sight feed chamber and the discharge end of the oiler, a freely reciprocable valve within the second chamber,

having a laterally expanded disk-like head presented toward the discharge end of the oiler, and said oiler having a valve seat at that end of the second-named chamber toward the sight feed chamber with the valve seat 4of less diameter than the face of the head of the valve presented theretoward, and means for directing a stream of gases of explosion against the central portionA of the laterally expanded valve headto cause seating of the valve before the gases can reach the sight feed chamber.

3. An oiler for explosion engines provided with a sight feed chamber and another chamber betweenthe sight feed chamber and the discharge end of the oiler, a freely recipwith a sight feed chamber and a passage leading therefrom to the discharge end of the oiler, said passage being of relatively contracted diameter where leaving the sight feed chamber, and then continuing as a laterally expanded chamber having the outlet endV internally screw threaded and where joining the passage of smaller diameter being shaped into a valve seat, a valve with a laterally expanded disk-like head having an axially extended hollow stem on one side adapted,` to the passage of smaller diameter leading fromthe sight feed chamber and said stem having a side outlet adjacent to the head, and a hollow plug or nut adapted to the screw threaded' end of the portion of the passagev leading lfrom the sight feed chamber, said plug having one end partially closed and provided with a centrally located passage therethrough and a central `boss through which the passage extends and which boss is provided with side outlets communicating with such central passage.

5. An oiler for explosion engines provided with a sight feed chamber, and a passage leading therefrom to the discharge end of .end internally screw threaded and where -joining the passage o-f smaller diameter being shaped into a valve seat, a valve with a j laterally expanded disk-like head having an axially extended hollow stem on one side adapted to the passage of smaller diameter leading from the sight feed chamber, and said stem having a sideoutlet adjacent to the head, and a hollow plug or nut adapted to the screw threaded end of the portion of the passage leading from the sight feed chamber, said plug having one end partially closed and provided with a centrally located passage therethrough and a central boss through which the passage extends and which boss is provided with side outlets communicating with such central passage, the sight feed chamber adjacent to the outlet passage therefromy being provided with a screen pervious to lubricant and resistant to obstructive or vobscuring particles.

6. An oiler provided with a sight feed chamber having a passage leading therepassage 4including another chamberwith a valve seat at the end ofthe portion ofthe passage leading from the sight feedcham J ber to the secondchamber and theportion ofthepassage leading Ifrom the secondf chamber to the discharge end of the oiler being of `less lateral extent than-said second chamber Where communicating With it, and avalve in the second chamber r'eciprocable therein in thedirection ofthe length of the outlet passage of the oiler and' adapted to 'the' said valve seat, the valve having the face toward" the outlet end ofthe second" chamber vexpanded into a baffle 4surface and said'i'ou'tl'etend of the second chamber being;

located With respect to the baiile faceof the valve to cause a `stream of gas entering' the second chamber fromthe outlet endV of the loiler 'to strike against thecentral portionof thevalve and Ifrom thence spread laterally into Jthechamber to Lseat the valve-in closing relation Vto the inlet end `ofthe second chamber before saidigas -stream reaches said inlet t `rend. c

7. Anoiler for explosion engines provided with a sight feed chamberand another'chamber between the sight; feed chamber andthe discharge end of the oiler and in communicationr With the sight feed chamber, that end ofthe second-named chamber remote fromy the sight feed `chamber comprising an.

`adjustable member having' an axially exi tended-boss of less diameter than said adwith a sight feed chamber having an outletl .just/able member or secondlnamedi chamber andprovi'ded with a centralizedV constricted passage opening into said second-named chamber, and al valve lodged inthe second'- namedA chamber and provided with a latzerally expanded. head of greater diameter than the external diameter of. the boss, said valve being freely reciprocable in the second-'named chamber andv normally seated. on

the boss.'

8. An oi'lerfor'explosion engines provided passage y expanded intermediately into a laiterallyextended chamber, andI a freely reciprocable valve Within the chamber provided Withy a laterally expanded disk-shaped headv movable into 'and out of closing relation tothe part of'the passage connecting the tivo chambers, vthe disk-shaped head of the valve being of" greater lateral extent than the diameter'of the partl of thepassage connecting the tivo chambers and: that portion `of the passage leading' away from-tlie second-named chamber being ofless diameter than the valve head and located with respect thereto to direct streams of fluid entering the outlet end of the oiler towardthe Ccpies of this patentmay he obtained for said chambers "against ay centralized portion* off the disk-shaped head to be in turn directed byY said head toward the margins thereof, whereby the valve is. moved to positionz'to c'lose:A communication between the tWochambers before the impelling fluidcan find accesslto'the hrst-named chamber.

"9. Ainoiler for explosion engines having an' outlet passage with an intermediately lo'- cated' andlaterallyrexpanded chamber, and a freely'reeiprocable` valve in the chamber havinga laterally expanded head presentinga'baille-'faceftoward the outlet end of suchl chamber; and said outletl endf of the chamber being located" substantially in line Wli'ththe.*longitudinal axis ofmovement of' the 'vail-ve tio tdirect 'streams of gas reaching thechamber from lthe outlet end of the oiler against 'a1- restricted centralized Zone of the headi to be-'diverted' therefrom tovvardthe sides'ofthe'chamber away from the inlet end ofsaid chamber, whereby such streams of gas move thevalveito position to close the" Y the intermediate chamber. 4remote from the.

sightn feedl chamber and said plug having a central axial kboss entering the second chainber, andsaid boss having a passage through it, laV valve havinga dislelike head Within the secondi chamber .and 'a stem extending into that portion ofthe passage connecting 'the tworchambers, the 'valve having its head laty erally expanded to a greater extent thanthe outside 'diameter of the boss, and said 'bossand' valve head being so constructed and arranged that a stream o f gas directed through the outletA end ofthe oiler toward the valve Willstrike the latter at -an intermediate portion and'` be divertedV thereby toward the sides of theintermediate chamberto force the valve into closing relation to the enter? ing ,passage of said second chamber before iio the actuating gas can reach the sight feed chamber, and a fine gauze screen extendedV across the `Wide end ofthe tapered bottom portion ofthe sight feed chamber. Y

In testimony 'that I claim the foregoing as myown, I have hereto aiii'xed my signaturein the presence of two Witnesses.

l `PETER P. VALBOE. Vit'nesses: Y'

A. G. WADsWoRTm, HOWARD CORWIN.

five cents each, By addressing theWCommissioner of Patents,

Washington, I); C?" 

